— Charles de Gaulle eighteenth President of the French Republic 1890 - 1970
„It is not good for a man to be too cognizant of his physical and spiritual mechanisms. Complete knowledge reveals limits to human possibilities, and the less a man is by nature limited in his purposes, the less he can tolerate limits.“
„The highest knowledge man can possess is that which is true in his own experience. If his experience is limited, so is his knowledge and he behaves accordingly.“
— Barry Long Australian spiritual teacher and writer 1926 - 2003
Context: You think: you become that thought. And consciousness, or the state of pure awareness, is lost. The highest knowledge man can possess is that which is true in his own experience. If his experience is limited, so is his knowledge and he behaves accordingly.
— Alphonse de Lamartine French writer, poet, and politician 1790 - 1869
Méditations Poétiques (1820), Sermon 2
„It is hardly in human nature that a man should quite accurately gauge the limits of his own insight; but it is the duty of those who profit by his work to consider carefully where he may have been carried beyond it.“
— William Kingdon Clifford English mathematician and philosopher 1845 - 1879
Context: It is hardly in human nature that a man should quite accurately gauge the limits of his own insight; but it is the duty of those who profit by his work to consider carefully where he may have been carried beyond it. If we must needs embalm his possible errors along with his solid achievements, and use his authority as an excuse for believing what he cannot have known, we make of his goodness an occasion to sin.
„It must be recognized that man in his limited and relative earthly life is capable of bringing about the beautiful and the valuable only when he believes in another life, unlimited, absolute, eternal. That is a law of his being. A contact with this mortal life exclusive of any other ends in the wearing-away of effective energy and a self-satisfaction that makes one useless and superficial. Only the spiritual man, striking his roots deep in infinite and eternal life, can be a true creator. But Humanism denied the spiritual man, handed over the eternal to the temporal, and took its stand by the natural man within the limited confines of the earth.“
— Nikolai Berdyaev Russian philosopher 1874 - 1948
„The view from complexity claims that we cannot know complex things completely... modest positions are inescapable... We can increase the knowledge we have of a certain [complex] system, but this knowledge is limited... The fact that our knowledge is limited is not a disaster, it is a condition for knowledge. Limits enable knowledge.“
— Paul Cilliers South African philosopher 1956 - 2011
Paul Cilliers (2005: 263) as quoted in: Vikki Bell (2007) Culture and Performance: The Challenge of Ethics, Politics and Feminist Theory. p. 8
„Education: that which reveals to the wise, and conceals from the stupid, the vast limits of their knowledge.“
— Mark Twain American author and humorist 1835 - 1910
„He may also believe in the existence of the ideal limit of knowledge and that it is approached by the human mind. He may call this ideal limit the objective truth.“
— Albert Einstein German-born physicist and founder of the theory of relativity 1879 - 1955
Context: Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world. In our endeavor to understand reality we are somewhat like a man trying to understand the mechanism of a closed watch. He sees the face and the moving hands, even hears its ticking, but he has no way of opening the case. If he is ingenious he may form some picture of a mechanism which could be responsible for all the things he observes, but he may never be quite sure his picture is the only one which could explain his observations. He will never be able to compare his picture with the real mechanism and he cannot even imagine the possibility or the meaning of such a comparison. But he certainly believes that, as his knowledge increases, his picture of reality will become simpler and simpler and will explain a wider and wider range of his sensuous impressions. He may also believe in the existence of the ideal limit of knowledge and that it is approached by the human mind. He may call this ideal limit the objective truth. The Evolution of Physics (1938) (co-written with Leopold Infeld) <!-- later published by Simon & Schuster (1967) -->
„To be sure, the human individual can, even must, feel and know himself to be limited—and this is what distinguishes him from the animal—but he can become conscious of his limits, his finite-ness, only because he can make the perfection and infinity of his species the object either of his feeling, conscience, or thought. But if his limitations appear to him as emanating from the species, this can only be due to his delusion that he is identical with the species, a delusion intimately linked with the individual’s love of ease, lethargy, vanity, and selfishness; for a limit which I know to be mine alone, humiliates, shames, and disquiets me. Hence, in order to free myself of this feeling of shame, this uneasiness, I make the limits of my individuality the limits of man’s being itself. What is incomprehensible to me is incomprehensible to others; why should this worry me at all? It is not due to any fault of mine or of my understanding: the cause lies in the understanding of the species itself. But it is a folly, a ludicrous and frivolous folly to designate that which constitutes the nature of man and the absolute nature of the individual, the essence of the species, as finite and limited.“
— Ludwig Feuerbach German philosopher and anthropologist 1804 - 1872
Introduction, Z. Hanfi, trans., in The Fiery Brook (1972), pp. 103-104
— Bertrand Russell logician, one of the first analytic philosophers and political activist 1872 - 1970
„Sibelius has an acutely developed sense of identification with nature and a preoccupation with myth that at one and the same time define his unique strength and his basic limitation. These preoccupations override his involvement in the human predicament, except in so far as it affects man’s relationship with nature.“
— Jean Sibelius Finnish composer of the late Romantic period 1865 - 1957
Robert Layton Sibelius (London: J. M. Dent,  1971), ch. 16, p. 153.
„Oppressive language does more than represent violence; it is violence; does more than represent the limits of knowledge; it limits knowledge.“
— Toni Morrison American writer 1931
Context: Tongue-suicide is not only the choice of children. It is common among the infantile heads of state and power merchants whose evacuated language leaves them with no access to what is left of their human instincts for they speak only to those who obey, or in order to force obedience. The systematic looting of language can be recognized by the tendency of its users to forgo its nuanced, complex, mid-wifery properties for menace and subjugation. Oppressive language does more than represent violence; it is violence; does more than represent the limits of knowledge; it limits knowledge. Whether it is obscuring state language or the faux-language of mindless media; whether it is the proud but calcified language of the academy or the commodity driven language of science; whether it is the malign language of law-without-ethics, or language designed for the estrangement of minorities, hiding its racist plunder in its literary cheek — it must be rejected, altered and exposed. It is the language that drinks blood, laps vulnerabilities, tucks its fascist boots under crinolines of respectability and patriotism as it moves relentlessly toward the bottom line and the bottomed-out mind. Sexist language, racist language, theistic language — all are typical of the policing languages of mastery, and cannot, do not permit new knowledge or encourage the mutual exchange of ideas.
„It is of the essence of imaginative culture that is transcends the limits both of the naturally possible and of the morally acceptable.“
— Northrop Frye Canadian literary critic and literary theorist 1912 - 1991
„Only one who has learned much can fully appreciate his ignorance.
He knows well the limits of his knowledge and how much is waiting to be learned.“
— Louis L'Amour Novelist, short story writer 1908 - 1988
„A good governance paradigm that limits excesses of human nature and ensures an atmosphere of happiness and productivity by promoting reason and dignity is required.“
— Nayef Al-Rodhan philosopher, neuroscientist, geostrategist, and author 1959
„Man is an organism, not a mechanism; and the mechanical pacing of his life does harm to his human responses, which naturally follow a kind of free rhythm.“
— Richard M. Weaver American scholar 1910 - 1963
“Individuality and Modernity,” Essays on Individuality (Philadelphia: 1958), p. 66.